Grease-cup.



T. 0. RGANn GREASE CUP.

APPLIGATION FILED 00T. 11, 1913.

D @tamed @my 2, MM,

'ervaren GIRESE-CU?.

Monete..

Speccaton of Letters Patent.

.dpplication tiled October ll, 192m.

Patented duly 2l, delle@ Serial No. 794,613.

To all whom t may concern Be it known that l, THoMAs 0. Oasen, a citizenof the United States, and a resident of Germantown, in the county ofPhila delphia and State or Pennsylvania, have invented a new andImproved Grease-Cup, of which the followingl is a full, clear, and exactdescription.

My invention relates to a grease cup of the type in which a plunger orfollower is employed, the movement of which in the cup serves todischarge the grease through a central feed tube to the bore of the stemby which the ycup is secured to the machine element to be lubricated.

Cups of the indicated character are usually so constructed as to involvea stem of lconsiderable length between the bottom of the cup body andthe piece of machinery to be lubricated, and wnen the cup is applied toa revolving element, a breaka` 'e of the stem is liable to result undercentri ugal force.

lt is a design of my invention 'to provide a grease cup employing aplunger to discharge the grease, and so constructed that a rigid stem orshank of minimum length may be formed between the cup and the part to belubricated, thus greatly reducing or overcoming the liability ofbreakage under centrifugal force.

It is a further design of my invention to provide a grease cup of theindicated character in which the grease will have less tendency tochange its density and harden. against the follower and the top of thecup, for which purpose l give the follower the form of a ringsurrounding the central discharge tube and arranged to move on saidtube, whereby to cause the grease to be rolled over from all sides inthe direction of the discharge tube.

The invention will be particularly ein Vplained in the specificdescription following,

l Reference is to be had to the accompany-A ing drawings forming a partof this speciiication, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a vertical section of a grease cup embodying my invention7showing the follower in a partly raised position; Fig. 2 is a similarview with the follower in the vuppermost osition; and Fig. 3 is a crosssection on t e line 3MB of Fig. 1. y

` lin constructing the grease cup in accord ance with my invention, asuitable body 10 is provided, open at the top and provided on the bottomwith a stem 12 having a through-bore 12a controlled by a plug 13, thelower end of the stern having a threaded nipple 12b to enter the machineelement to b e lubricated. The upper end of the cup lll is exteriorlythreaded and receives an interlorly threaded cup-shaped cover ll.

Disposed centrally in the cup 10 is an upright discharge tube 14, thelower end of which is threaded into the bottom of the cup l0 co-axialwith the bore 1221 of the'stern lf2. On the tube 14 is litted a ringfollower or plunger designated generally by'the nua meral 15, and whichmay comprise a bottom plate lo, a cup leather 17, and an upper clampring 18, the whole being clamped together by screws 19 or the like. Ahelical spring 20 surrounds the discharge tube 14C below the ringfollower 15, the lower end of the spring resting on the bottom of thecup 10, and the upper end abutting against the under side of thefollower. 0n the upper end of the discharge tube le is a nut 2l whichforms a stop for limiting the upward movement of the follower 15 underthe pressure of the spring 2U.

lt will be observed that the discharge tube ll within the cup is a rigidfixture and that neither the said tube nor the plunger presents anymember movable within the stem 12, nor is there any exterior element ofthe cup movable on the stem 12, the result being that the stem may bemade very short, whereby to possess increased strength to resistcentrifugal i'orce. The guiding of the plunger or follower is effectedthrough the fixed discharge tube le within. the cup.A

ln use, the grease may be placed in the cup-shaped cover 11, which isfilled or substantially filled and then inverted and screwed down ontothe body of the cup l0, the downward movement or' the cover servlili ingto cause the grease to press the follower 15 downwardly and place thespring 20 under tension. The reaction olf' the spring tends to force thefollower upwardly as rapidly as the control of the bore l2EL in the stomby the plug 13 will permit the outflow of the grease to the element tobe lubricated. ln the upward movement of the rin piston the grease iscaused to roll inward y from "all sides toward the simple dischargetube. When the follower has reached the limit of its upward movement, byengaging the stop Hull [nut 215 the cover 11 may be screwed downj wardlyonce more to again depress the foldepending from the bottom thereof, thesaid j stem having an outlet bore, a'discharge tube' xedly secured tothe bottom of the cup in communication with the outlet bore, said tuberising in 'the interior 0f the cup, a

ring follower surrounding the discharge tubel and movable up and downthereon, vmeans to cause the follower to be raised,

' and a cup-shaped cover forming a closure open atfthe tfop,

for the upper endgof the cup.

2. A greafse hup. having a hollow body d a seeuringstem dependincensoing from the bottom thereof and formed with an outlet port,- a fixeddischarge tube in axial alinement with the outlet port and rising in theinterior of the cup, a stop nut on the upper end of the discharge tube,and a ring -follower in the cup and surrounding the dlschargetube tohave sliding' up and down movement thereon, means for causing an upwardpressure on the under side of the ring follower to cause the same torise, and a cup-shaped cover interiorly threaded, the cup body ceive thethread of the cover. y

ln testimony whereof I have signed lmy name to this specification in thepresence yof two subscribing witnesses. "f'

THOMAS orne ORGAN. f

Witnesses:

AUGUSTUS C. Bozar, HAROLD A. BUZBY.

having an external thread to rey

